Chemistry - Carbonyl compounds Question with Solution | TestHub
ChemistryCarbonyl compoundsMETHOD OF PREPARATION OF ALDEHYDES AND KETONESMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
(There are two questions based on PARAGRAPH “X”, the question given below is one of them)
(I) and (H) are
Options:
Answer:
A
Solution:
(I) is obtained from ozonolysis (O₃/Zn) of a terminal alkene present in (A).
Ozonolysis of R–CH=CH₂ gives R–CHO + HCHO, so one product is formaldehyde (J).
Since (J) on Clemmensen reduction gives CH₄, it confirms (J) = HCHO.
Thus, the other fragment (I) must be an aldehyde (R–CHO).
Further, (G) on treatment with HgSO₄/H₂SO₄ undergoes hydration of alkyne.
This reaction gives enol → keto tautomerisation, forming a ketone.
Hence, (H) is a ketone and (I) is an aldehyde.
Stream:JEESubject:ChemistryTopic:Carbonyl compoundsSubtopic:METHOD OF PREPARATION OF ALDEHYDES AND KETONES
⏱ 2mℹ️ Source: QB
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